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A Geobotanical Analysis Of Circumpolar Arctic Vegetation Climate And Substrate
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Book Synopsis A Geobotanical Analysis of Circumpolar Arctic Vegetation, Climate, and Substrate by : Martha Kean Raynolds
Download or read book A Geobotanical Analysis of Circumpolar Arctic Vegetation, Climate, and Substrate written by Martha Kean Raynolds and published by . This book was released on 2009 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The objective of the research presented in this dissertation was to better understand the factors controlling the present and potential future distribution of arctic vegetation. The analysis compares the Circumpolar Arctic Vegetation Map (CAVM) with circumpolar data sets of environmental characteristics. Geographical information system (GIS) software was used to overlay the CAVM with a satellite index of vegetation (normalized difference vegetation index, NDVI) and environmental factors that are most important in controlling the distribution of arctic vegetation, including summer temperature, landscape age, precipitation, snow cover, substrate chemistry (pH and salinity), landscape type, elevation, permafrost characteristics, and distance to sea. Boosted regression tree analysis was used to determine the relative importance of different environmental characteristics for different vegetation types and for different regions. Results of this research include maps, charts and tables that summarize and display the spatial characteristics of arctic vegetation. The data for arctic land surface temperature and landscape age are especially important new resources for researchers. These results are available electronically, not only as summary data, but also as GIS data layers with a spatial context (www.arcticatlas.org). The results emphasize the value and reliability of NDVI for studying arctic vegetation. The relationship between NDVI and summer temperatures across the circumpolar arctic was similar to the correlated increases in NDVI and temperature seen over the time period of satellite records. Summaries of arctic biomass based on NDVI match those based on extrapolation from ground samples. The boosted regression tree analysis described ecological niches of arctic vegetation types, demonstrating the importance of summer temperatures and landscape age in controlling the distribution of arctic vegetation. As the world continues to focus on the Arctic as an area undergoing accelerated warming due to global climate change, results presented here from spatially explicit analysis of existing arctic vegetation and environmental characteristics can be used to better understand plant distribution patterns, evaluate change in the vegetation, and calibrate models of arctic vegetation and animal habitat."--Leaf iii.
Book Synopsis Proceedings of the Second Circumpolar Arctic Vegetation Mapping Workshop, Arendal, Norway, 19-24 May 1996 and the CAVM-North America Workshop, Anchorage, Alaska, US, 14-16 January 1997 by : Donald A. Walker
Download or read book Proceedings of the Second Circumpolar Arctic Vegetation Mapping Workshop, Arendal, Norway, 19-24 May 1996 and the CAVM-North America Workshop, Anchorage, Alaska, US, 14-16 January 1997 written by Donald A. Walker and published by . This book was released on 1997 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Circumpolar Arctic Vegetation by : Marilyn D Walker
Download or read book Circumpolar Arctic Vegetation written by Marilyn D Walker and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Arctic and Antarctic by : Vera D. Aleksandrova
Download or read book The Arctic and Antarctic written by Vera D. Aleksandrova and published by Cambridge University Press. This book was released on 2009-06-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1977, this is an authoritative work by one of the world's leading ecologists. Aleksandrova's account is a very full one with much detail. The methods of classification are as interesting as the results. A wide variety of floristic, vegetational, structural, faunistic and ecological data, both qualitative and quantitative, are used to diagnose and characterise vegetation units. The vegetation of the Arctic and Antarctic is classified according to diagnostic and characteristic features. The Arctic is divided into two provinces, tundra and polar desert and the Antarctic into subantarctic herbaceous cushion vegetation and antarctic polar desert. The arctic tundra is further subdivided into subarctic with shrubby Betula (Birch) or true arctic tundra without Betula. The end result is an analysis of plant communities in the polar regions that enables ecologists to generalise and, perhaps more important, to limit correctly the scope of that generalisation when it is drawn from careful local studies.
Book Synopsis The Arctic and Antarctic by : Vera D. Aleksandrova
Download or read book The Arctic and Antarctic written by Vera D. Aleksandrova and published by Cambridge University Press. This book was released on 1980-09-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1977, this is an authoritative work by one of the world's leading ecologists. Aleksandrova's account is a very full one with much detail. The methods of classification are as interesting as the results. A wide variety of floristic, vegetational, structural, faunistic and ecological data, both qualitative and quantitative, are used to diagnose and characterise vegetation units. The vegetation of the Arctic and Antarctic is classified according to diagnostic and characteristic features. The Arctic is divided into two provinces, tundra and polar desert and the Antarctic into subantarctic herbaceous cushion vegetation and antarctic polar desert. The arctic tundra is further subdivided into subarctic with shrubby Betula (Birch) or true arctic tundra without Betula. The end result is an analysis of plant communities in the polar regions that enables ecologists to generalise and, perhaps more important, to limit correctly the scope of that generalisation when it is drawn from careful local studies.
Download or read book Arctic and Alpine Research written by and published by . This book was released on 1996 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of the Arctic by : Mark Nuttall
Download or read book Encyclopedia of the Arctic written by Mark Nuttall and published by New York : Routledge. This book was released on 2005 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Encyclopedia of the Arctic offers a rich and dynamic view of, and introduction to, an enormous, incredibly diverse, and rapidly changing part of the world. Its three volumes comprise overviews of hundreds of topics, events, places, people, human cultures, animals, and environments, ranging from geological history, exploration, the cultures and livelihoods of indigenous peoples, geopolitics, international environmental cooperation, natural history, physical processes, life sciences, and environmental change."--Page xxxix.
Book Synopsis Vegetation and Environmental Gradients of the Prudhoe Bay Region, Alaska by : Donald A. Walker
Download or read book Vegetation and Environmental Gradients of the Prudhoe Bay Region, Alaska written by Donald A. Walker and published by . This book was released on 1985 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1995 with total page 1214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Halophytes by : Marius-Nicusor Grigore
Download or read book Handbook of Halophytes written by Marius-Nicusor Grigore and published by Springer. This book was released on 2021-05-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights the potential of biosaline agriculture in a changing environment Covers all important topics related to halophyte biology including biochemistry, genetics and genomics Provides information on potential use of halophytes Each topic is explained in detail and examined from various angles More than 100 contributions by international experts
Book Synopsis Global Biodiversity in a Changing Environment by : Osvaldo E. Sala
Download or read book Global Biodiversity in a Changing Environment written by Osvaldo E. Sala and published by Springer Science & Business Media. This book was released on 2001-08-24 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climatic change, conservation biology
Download or read book The Far North: written by Elena I. Troeva and published by Springer Science & Business Media. This book was released on 2010-10-24 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outside Russia very little is known about the terrestrial ecology, vegetation, biogeographical patterns, and biodiversity of the enormously extensive ecosystems of Yakutia, Siberia. These systems are very special in that they function on top of huge layers of permafrost and are exposed to very severe and extreme weather conditions, the range between winter and summer temperatures being more than 100 degrees C. The soils are generally poor, and human use of the vegetation is usually extensive. Main vegetation zones are taiga and tundra, but Yakutia also supports a special land and vegetation form, caused by permafrost, the alas: more or less extensive grasslands around roundish lakes in taiga. All these vegetation types will be described and their ecology and ecophysiological characteristics will be dealt with. Because of the size of Yakutia, covering several climatic zones, and its extreme position on ecological gradients, Yakutia contains very interesting biogeographical patterns, which also will be described. Our analyses are drawn from many years of research in Yakutia and from a vast body of ecological and other literature in Russian publications and in unpublished local reports. The anthropogenic influence on the ecosystems will be dealt with. This includes the main activities of human interference with nature: forestry, extensive reindeer herding, cattle and horse grazing, etc. Also fire and other prominent ecological factors are dealt with. A very important point is also the very high degree of naturalness that is still extant in Yakutia’s main vegetation zones.
Book Synopsis Understanding plant diversity and evolution in the mediterranean basin by : Nico Cellinese
Download or read book Understanding plant diversity and evolution in the mediterranean basin written by Nico Cellinese and published by Frontiers Media SA. This book was released on 2023-04-28 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Eurasian Steppes. Ecological Problems and Livelihoods in a Changing World by : Marinus J.A. Werger
Download or read book Eurasian Steppes. Ecological Problems and Livelihoods in a Changing World written by Marinus J.A. Werger and published by Springer Science & Business Media. This book was released on 2012-06-14 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Steppes form one of the largest biomes. Drastic changes in steppe ecology, land use and livelihoods came with the emergence, and again with the collapse, of communist states. Excessive ploughing and vast influx of people into the steppe zone led to a strong decline in nomadic pastoralism in the Soviet Union and China and in severely degraded steppe ecosystems. In Mongolia nomadic pastoralism persisted, but steppes degraded because of strongly increased livestock loads. After the Soviet collapse steppes regenerated on huge tracts of fallow land. Presently, new, restorative steppe land management schemes are applied. On top of all these changes come strong effects of climate change in the northern part of the steppe zone. This book gives an up-to-date overview of changes in ecology, climate and use of the entire Eurasian steppe area and their effects on livelihoods of steppe people. It integrates knowledge that so far was available only in a spectrum of locally used languages.
Book Synopsis Social and Environmental Impacts in the North: Methods in Evaluation of Socio-Economic and Environmental Consequences of Mining and Energy Production in the Arctic and Sub-Arctic by : Rasmus Ole Rasmussen
Download or read book Social and Environmental Impacts in the North: Methods in Evaluation of Socio-Economic and Environmental Consequences of Mining and Energy Production in the Arctic and Sub-Arctic written by Rasmus Ole Rasmussen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: Future development in the Arctic and Subarctic region requires careful attention to the possible consequences of the development activities themselves, in relation to their environmental, socioeconomic and cultural impacts. A more thorough understanding of the impact of future activities, however, demands the dissemination and confrontation of results from different regions and different scientific traditions. This requires scientific cooperation, not only across disciplines but across border. Primarily it requires both consensus and innovations in regard to methods. This book confronts such differences in approaches and methods in relation to the analysis of socioeconomic and environmental consequences of large-scale mineral and energy development activities in the Arctic and Subarctic, establishing the common ground upon which future research activities can be based.
Book Synopsis Vegetation mapping by : A.W. Küchler
Download or read book Vegetation mapping written by A.W. Küchler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: A. W. KOCHLER The intimate intercourse between two or more 2. vegetation maps are scientific tools for ana fields of knowledge often bears interesting and lyzing the environment and the relation valuable fruit. Vegetation maps are such fruit, ships between vegetation and the site on resulting from the union of botany and geogra which it occurs. This helps to explain the phy. The work of botanists can be comprehen distribution of plant communities on the sive only if it includes a consideration of plants basis of the physical and chemical features in space, i. e. in different types of landscapes. At of the landscape. On the other hand, plant this point, the work of geographers becomes communities allow conclusions on the natu important through their development of maps re of the environment; as tools to determine and to analyze distribu 3. vegetation maps are valuable standards of tions in space. Our highly developed knowledge reference for observing and measuring of vegetation is matched by the refinement of changes in the vegetation, their direction cartographic techniques, and maps can now be and their speed, i. e. the rate of change. This is important because the character ofvegeta made that will show the extent and geographical distribution of vegetation anywhere on the sur tion is dynamic and is increasingly affected face of our planet with a remarkable degree of by man; accuracy. 4.
Book Synopsis Global Vegetation by : Jörg S. Pfadenhauer
Download or read book Global Vegetation written by Jörg S. Pfadenhauer and published by Springer Nature. This book was released on 2020-09-09 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: This up-to-date textbook of global vegetation ecology, which comprises the current state of knowledge, is long overdue and much-needed. It is a translation of the textbook “Vegetation der Erde” (Springer-Spektrum, Heidelberg). A short introductory chapter deals with the fundamentals of vegetation ecology that are of importance for the delimitation and characterization of the global vegetation presented in this book (chorology, evolution of plants, physiognomic and structural characteristics, phytodiversity and the human impact on it as well as general terminology concerning both plant growth forms and on vegetation structure types). In the following chapters the zonal and azonal vegetation from the tropics to the polar regions including high mountains is described and discussed. The main focus is on the characterization of interactions between the spatial location of plants and plant communities on the one hand and site conditions, historic and genetic processes, spatial and temporal patterns, ecophysiology and anthropogenic influences on the other hand. Additional information on specific topics is provided in 51 boxes.
